Name Planned shipping method Start Date  
Legionella recooling water
Parameters (quantitative): Legionella spp. membrane filtration (after heat treatment) [cfu/100ml], Legionella spp. membrane filtration (with acid treatment) [cfu/100ml], Legionella spp. plating (original sample) [cfu/100ml], Legionella spp. plating (after heat treatment) [cfu/100ml], Legionella spp. plating (with acid treatment) [cfu/100ml]
Article Number: 2010958
Category: immunological, molecular biological and microbiological testing Environmental analytics recooling water
Accreditation: This proficiency test is within the scope of the A2LA accreditation.
risk group 2
Frozen shipping September 2025 Add to cart
Legionella recooling water
Article Number: 2010958
September 2026 Add to cart
Legionella spp. drinking water
Parameters (quantitative): Legionella spp. plating (original sample) [cfu/100ml], Legionella spp. membrane filtration (with acid treatment) [cfu/100ml]
Article Number: 2010114
Category: immunological, molecular biological and microbiological testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
risk group 2
Frozen shipping September 2025 Add to cart
Legionella spp. drinking water
Article Number: 2010114
September 2026 Add to cart
Microplastic – particle number
Parameters (quantitative): particle number [particle number / g]
Article Number: 2010395
Description: These are artificial samples that can contain particles and fibres in the range of 200 µm to 600 µm.
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
Refrigerated shipping December 2025 Add to cart
Microplastic – particle number
Article Number: 2010395
December 2026 Add to cart
PFAS in drinking water
Parameters (quantitative): total perfluorooctanesulfonic acid (CAS 1763-23-1) [ng/l], total perfluorooctanoic acid (CAS 335-67-1) [ng/l], total perfluorononanoic acid (CAS 375-95-1) [ng/l], total perfluorohexane sulfonic acid (CAS 355-46-4) [ng/l]
Article Number: 2011123
Description: In each case, the sum of linear and branched isomers of PFOS, PFOA, PFNA and PFHxS is queried. The concentration of per- and polyfluorinated substances (PFAS) is in the ng/kg range.
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
Frozen shipping September 2025 Add to cart
PFAS in drinking water
Article Number: 2011123
September 2026 Add to cart
PFAS in soil
Parameters (quantitative): total perfluorooctanesulfonic acid (CAS 1763-23-1) [µg/kg dry matter], total perfluorooctanoic acid (CAS 335-67-1) [µg/kg dry matter], total perfluorononanoic acid (CAS 375-95-1) [µg/kg dry matter], total perfluorohexane sulfonic acid (CAS 355-46-4) [µg/kg dry matter]
Article Number: 2011127
Description: In each case, the sum of linear and branched isomers of PFOS, PFOA, PFNA and PFHxS is queried. The concentration of per- and polyfluorinated substances (PFAS) is in the µg/kg range.
Category: chemical-physical testing Environmental analytics soil
Accreditation: This proficiency test is not included in the scope of the accreditation.
Frozen shipping June 2025 Add to cart
PFAS in soil
Article Number: 2011127
June 2026 Add to cart
Plastic materials - aerobic biodegradability (ISO 14855-2, ASTM D5338-15)
Parameters (quantitative): Biodegradation via CO2 [%]
Article Number: 2011138
Description: The samples are to be tested for biodegradability at 58°C under aerobic conditions over a period of 45 days.
Category: immunological, molecular biological and microbiological testing Environmental analytics biodegradation
Accreditation: This proficiency test is not included in the scope of the accreditation.
Refrigerated shipping October 2025 Add to cart
Plastic materials - aerobic biodegradability (ISO 14855-2, ASTM D5338-15)
Article Number: 2011138
October 2026 Add to cart
Plastic materials - anaerobic biodegradability (ASTM D5511)
Parameters (quantitative): Biodegradation via CO2 and CH4 development [%]
Article Number: 2011139
Description: The samples should be tested for biodegradability under anaerobic conditions at 37°C (mesophilic conditions) over a period of 30 days. Note: Please contact us if you would like to test the samples at 52°C (thermophilic conditions).
Category: immunological, molecular biological and microbiological testing Environmental analytics biodegradation
Accreditation: This proficiency test is not included in the scope of the accreditation.
Refrigerated shipping October 2025 Add to cart
Plastic materials - anaerobic biodegradability (ASTM D5511)
Article Number: 2011139
October 2026 Add to cart
Ps. Aeruginosa drinking water
Parameters (quantitative): Ps.aeruginosa [cfu/100ml]
Article Number: 2010660
Description: Possible methods for participation, e.g.: ISO 16266
Category: immunological, molecular biological and microbiological testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
risk group 2
Frozen shipping July 2025 Add to cart
Ps. Aeruginosa drinking water
Article Number: 2010660
July 2026 Add to cart
Pseudomonas aeruginosa recooling water
Parameters (quantitative): Ps.aeruginosa [cfu/100ml]
Article Number: 2010960
Category: immunological, molecular biological and microbiological testing Environmental analytics recooling water
Accreditation: This proficiency test is within the scope of the A2LA accreditation.
risk group 2
Frozen shipping July 2025 Add to cart
Pseudomonas aeruginosa recooling water
Article Number: 2010960
July 2026 Add to cart
Total count recooling water
Parameters (quantitative): aerobic total count 36°C [cfu/ml], aerobic total count 22°C [cfu/ml]
Article Number: 2010962
Category: immunological, molecular biological and microbiological testing Environmental analytics recooling water
Accreditation: This proficiency test is within the scope of the A2LA accreditation.
risk group 2
Frozen shipping July 2025 Add to cart
Total count recooling water
Article Number: 2010962
July 2026 Add to cart
1 Parameter mit dieser Kennzeichnung sind abhangig von der Teilnehmerzahl und/oder der Materialauswahl.
Unter Umständen kann es vorkommen, dass dieser Parameter im Ringversuch nicht zur Verfügung steht.